The Assessment of Teaching at a Large Urban Community .ppt

1、The Assessment of Teaching at a Large Urban Community College,Terri M. Manning and Denise Wells, Central Piedmont Community College Lily Hwang, Morehouse College Lynn Delzell, UNC-Charlotte,Presentation made to AIR, May 19st, 2003 Tampa, FL,Why we evaluate teaching?,We do teaching evaluation for two

2、 reasons (heavy emphasis on the 1st): 1. So faculty will have feedback from students that can be used to improve teaching. 2 . So chairs/division directors can have one consistent indicator of students perceptions about faculty (especially part-timers). These are often used as one of several means o

3、f teaching assessments for merit.,Problems in General with “Evaluation of Teaching” Tools,Most are created internally Committees dont always start at the beginning “what is good teaching?” Most are not tested for (at least) validity and reliability Many are thrown together rather quickly by a commit

4、tee whose goal is a usable survey tool,Very Few Tools are For Sale,Institutions are unique and what they want to measure is unique (undergraduate, graduate, continuing ed, literacy and distance ed courses) Because most institutions see them for what they are. happiness coefficients No one will stand

5、 behind them “our tool is a valid measure of teaching” They would never stand up in court So be very careful! Never site your teaching eval as a reason for not renewing a contract.,Problems with the use of them,The scores are used inappropriately and sometimes unethically (or at least stupidly) They

6、 are used for merit pay, promotion and tenure Scores are treated like gospel - “you are a bad teacher because you scored below the department mean on the tool”,Problems with use, cont.,Critical at the community college where 100% of the job description is “to teach” Used to make hiring and firing de

7、cisions Teachers are placed in a “catch-22” situation (do I pretend this tool measures teaching or blow it off you could be in trouble either way) Who is included in group means for comparison purposes,A Misconception,You get a bunch of people together Throw a bunch of questions together Call it a t

8、eaching evaluation tool And “hocus pocus” it is a valid, reliable, sensitive and objective tool You can make merit, promotion and tenure decisions with it no problem,What Makes a Good Questionnaire?,Validity it truly (with proof) tests what it says it tests (good teaching) Reliability it tests it co

9、nsistently over time or over terms, across campuses and methods Sensitivity (this is critical) it picks up fine or small changes in scores when improvements are made, they show up (difficult with a 5-point likert scale) Objectivity participants can remain objective while completing the tool it doesn

10、t introduce bias or cause reactions in subjects,Problems Inherent in Teaching Evaluation with Validity,What is “good teaching” It isnt the same for all teachers It isnt the same for all students We know it when it is not there or “absent” Yet, we dont always know it when we see it (if the style is d

11、ifferent than ours) Who gets to define good teaching How do you measure good teaching How can you show someone how to improve it based on a “likert-scale” tool (this is how you raise your mean by .213 points),Problems Inherent in Teaching Evaluation with Reliability,Students perceptions change (e.g.

12、 giving them the survey just after a tough exam versus giving it to them after a fun group activity in class) From class to class of the same course, things are not consistent Too much is reliant on the students feeling that day (did they get enough sleep, eat breakfast, break up with a boy friend,

13、feel depressed, etc.) Faculty are forced into a standard bell curve on scores There is often too much noise (other interactive factors, e.g. student issues, classroom issues, time of day),Greatest Problem . Sensitivity,Likert scales of 1-5 leave little room for improvement Is a faculty member with a

14、 mean of 4.66 really a worse teacher than a faculty member with a mean of 4.73 on a given item Can you document for me exactly how one can improve their scores In many institutions, faculty have learned how to abuse these in their merit formulas Faculty with an average mean across items of 4.88 stil

15、l dont get into the highest rung of merit pay,The Standard Bell Curve,Mean,IQ An Example of a (somewhat) Normally Distributed Item (key is range),Standard Deviation = 15,The Reality of Our Tool - Questions #1 of 17,734 responses from Fall 2000),Item Mean = 4.54, Standard Deviation = .77,Mean,1. The

16、instructor communicates course objectives, expectations, attendance policies and assignments.,What Would the Scores Look Like?,Standard Deviations Above and Below the Mean,Maximum Score = 5,How We Developed the Student Opinion Survey at CPCC,We started with the old tool An analysis was done (it was

17、rather poor and proof of administrative reactions to current issues) The old tool contained 20 questions mostly about the business of teaching (handing back exams, speaking clearly, beginning class on time, etc.) 91% of faculty received all 4s and 5s on each item The less sophisticated students were

18、, the higher they rated their teachers,Next,A subcommittee of the Institutional Effectiveness Committee was formed consisting mainly of faculty The committee spent one year studying the tools of other colleges and universities and lifting what we liked We found virtually nothing for sale What we did

19、 find were test banks of questions,Next, cont.,We started with 50-60 questions we liked off of other tools We narrowed the questions down We worked through every single word in each statement to make sure they were worded exactly like we wanted them and that they measured what we wanted We ended up

20、with 36 questions on the new tool,Next, cont.,We worked on the answer scale We found students had trouble processing the likert scale (it wasnt defined) Students liked the A-F grading scale but faculty didnt (it took far less time) We worked through the “excellent, good, fair, poor” type of scale an

21、d the “strongly agree to strongly disagree” scale. We tested two types during our pilot process.,Next, cont.,We wanted to create subscales with a wider range of scores than a 1-5 scale:The art of teaching The science of teaching The business of teaching The course The student,Next, cont.,We pilot te

22、sted the tool with about 10 classes and followed it up with focus groups (Fall 1999) We revised the tool We pilot tested again (many sections, about 400 students) with two scales (Summer 2000): A-F scale like grades A-E scale with definitions for each score,What We Found,Students rated faculty diffe

23、rently depending on the scale. Example:13. How would you rate 13. The instructor the instructor on encourages encouraging thinking and learning thinking and learning.A-F Scale Strongly Agree ScaleMean 3.56 Mean 3.48 St.Dev. .74 St.Dev. .71A 241 (68.7%) SA 203 (58.8%)B 75 (21.4%) A 107 (31.0%)C 28 (8

24、.0%) PA 31 (9.0%)D 6 (1.7%) D 4 (1.2%)F 1 (.3%) SD 0,More Testing,We took the first full data-set (Fall 2000) and did some comprehensive analysis on the tool. We found: Students rated the faculty in more difficult classes higher (we and the Deans thought the opposite would be true) Students rated mo

25、st course difficulty levels as “about right.” Students didnt inflate their course involvement and preparation,We Attempted to Establish Validity,We took the survey results to a Division Director and had them look at the scores from the survey and compare them with what they knew to be true of their

26、faculty over the years. The faculty analyzed had been at the college for years and had a definite “history of teaching” Some we looked at scored rather low and some extremely high (but lots of variance) The Division Director felt the survey picked the faculty out in order of their teaching ability.

27、Those scoring lower were not considered as good a teacher as those who scored high.,Why Validity is Hard,Typically to establish validity, one uses a tool considered “valid” and compares the new tool to the results of the valid tool With teaching evaluation, there are no established “valid” tools The

28、 only way we knew to validate it was against the historical records of teaching at the College and through some statistical tests (factor analysis),Results,We finalized the tool in summer of 2000 We began using it in every class in Fall 2000,Improving Teaching,Chairs or Division Directors should use

29、 it appropriately It is one indicator of teaching (we say it counts no more than 40%) A criteria or benchmark was set (average of 4 on all items our criteria) If a faculty scores an average of 4 out of five on every item, how much more can we really expect? Do not norm-reference it (set means and st

30、andard deviations based on your departments norms)Why?,Case Scenario,In Fall a faculty member rates a 4.22 on item 12 on the survey. In her department the mean on that item was 4.76, SD=.36. This faculty member is told “you scored more than one SD below the department mean and need to improve your t

31、eaching.” That faculty member works very hard to improve her teaching. In the Spring term on item 12 she scores a 4.51. She is happy her scores are now up within one SD of the department mean. However, everyone else in the department also raised their scores and the new department mean is 4.81, SD=.

32、28. Her scores are still more than one SD below the department mean.,Case Scenario, cont.,Whats worse, she has a friend in another department where the department mean on item 12 was 3.99, SD=.21. If only she worked in that department, she would score more than one standard deviation above the mean

33、and be considered a good teacher. That chair wouldnt ask her to make improvements in her teaching. Is she really a better or worse teacher in either department?,Case Scenario, cont.,Things can be very different within departments: Some classes are electives Some classes are required for majors Multi

34、ple disciplines will be incorporated into a department mean Some courses are easier than others Students are forced into some classes and dont want to be there,We found that we had to impress upon the faculty and staff that:,Once a Tool is Established. Every time you change a single word, you invali

35、date the survey Every time you change the scale, you invalidate the survey Every time you add or throw out a question, you invalidate the survey If not, they want to keep changing it,Characteristics of the New Teaching Evaluation Tool,Comparing the Scales,Old Tool % 4-5 = 91% New Tool % 4-5 = 85%,Ps

36、ychometric Properties - Validity,Factor Analysis of the Teacher Evaluation Assessment SurveyEigenvalues and Factor Loadings Factor 1 Factor 2 Emerging Factor 3 Instructor Course Student Eigenvalue = Eigenvalue = Eigenvalue = 19.35 2.61 1.26,The Instructor Factor 1,The art, science and business of te

37、aching did not factor out separately The science and business of teaching were highly correlated to the art of teaching This makes sense. If a faculty member does not utilize multiple methods in teaching or hand papers back in a reasonable amount of time chances are students wont rate them as good t

38、eachers How faculty utilize appropriate method and manage the classroom impact how students see them as teachers,Psychometric Properties - Reliability,Internally consistent = a measure of how consistent the instrument assesses teaching quality across the items Cronbachs Alpha - compares the function

39、ing of each item to all the other items within the instrument (a perfectly reliable instrument will produce a coefficient of 1.00) The TEAS yielded an Alpha of .974 indicating very good internal reliability,Psychometric Properties - Sensitivity,While the TEAS may be able to distinguish improvement i

40、n instructors who performed “Below Average” or “Very Poor,” it will not identify improvement in those who have already scored in the top rating (this is fine with us) Another indication that the instrument may not detect small changes is the rather small item standard deviations (.72 - .98) The grea

41、ter the spread across items, the better the sensitivity (the subscales produce this),Sub-Scales The Important Pieces,The Art of Teaching,The Art of Teaching (items: 8, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21) The art of teaching involves the more innate aspects of teaching that are not considered met

42、hod. Examples of this would be a teachers ability to motivate students, be enthusiastic, positive attitude toward students and course, encourage participation, make students feel valued and comfortable asking questions, etc.,Art of Teaching,Scale of possible points for this item is 11-55 Points (it

43、is more sensitive). Mean: 48.9St. Dev: 8.1Number scoring 11-21 (2 on every item) 174 (1.0%) Number scoring 22-32 (3 on every item) 674 (4.1%) Number scoring 33-43 (4 on every item) 2,376 (14.5%) Number scoring 44-55 (4/5s every item) 13,192 (80.4%),From Fall 2000 dataset,Science of Teaching,The Scie

44、nce of Teaching (items: 2, 9, 16, 18, 19) The science of teaching involves methods or areas that can be taught such as organizing class time, clarifying materials with examples, making relevant assignments, use of text book and teaching new things to students.,Science of Teaching,Scale of possible p

45、oints for this item is 5-25 points. Mean: 22.2St. Dev: 3.5Number scoring 5-9 (2 on every item) 121 (.7%) Number scoring 10-14 (3 on every item) 547 (3.2%) Number scoring 15-19 (4 on every item) 2,551 (14.8%) Number scoring 20-25 (4/5s on every item) 14,054 (81.4%),From Fall 2000 dataset.,The Busines

46、s of Teaching,The Business of Teaching (items: 1, 3, 4, 5, 6, 7) The business of teaching involves items and issues required by the institution such as handing out syllabi, applying policies and being fair to students, meeting the class for the entire period, holding office hours, providing feedback

47、 and announcing tests in advance, etc.,The Business of Teaching,Scale of possible points for this item is 6-30 points. Mean: 26.8St. Dev: 3.9Number scoring 6-11 (2 on every item) 73 (.4%) Number scoring 12-17 (3 on every item) 401 (2.4%) Number scoring 18-23 (4 on every item) 2,505 (14.7%) Number sc

48、oring 24-30 (4/5s on every item) 14,043 (82.5%),From Fall 2000 dataset,The Course,The Course (3 items: 22, 24, 27) The course evaluation has less to do with the teacher and more to do with the course characteristics, its applicability to the students field of study, difficulty level, etc.,The Course

49、,Scale of possible points for this item is 3-15 points. Mean: 12.8St. Dev: 2.4Number scoring 3-5 (2 on every item) 142 ( .8%)Number scoring 6-8 (3 on every item) 750 ( 4.4%)Number scoring 9-11 (4 on every item) 3,476 (20.6%)Number scoring 12-15 (4/5s on every item) 12,489 (74.1%),From Fall 2000 dataset,The Student,The Student (items: 31, 32, 33, 34, 35, 36) This allows a student to assess the amount of effort they put into the course. While faculty are not responsible for this, it may help explain the variance in teacher evaluation.,