The influences of class size and the number of students completing surveys on faculty and course ratings were studied. For classes of 30 or more, a 50 percent response rate gives an acceptable indication of rating, while for a class of less than 30, about 80 percent return is needed. (Author/SW)

From a priori and post hoc data collection perspectives, this paper describes the interrelations among (1) power, alpha, effect size, and sample size for hypothesis testing; and (2) precision, confidence, and sample size for interval estimation. Implications for special education researchers working with convenient samples of fixed size are…

Evaluates two British ethnographic studies by Bruce Carrington and Edward Wood, and by Cecile Y. Wright claiming to find evidence of teachers' racist attitudes and behaviors toward Afro-Caribbean students that contributed to student underachievement. Delineates methodological flaws. Argues that Wright's findings that the source of racism is in…