search for: test_score

I''m sorting a separate list that doesn''t contain a certain user''s attribute, but trying to but that certain user''s attribute on the separate percentile. test_scores = Testscore.find(:all, :conditions=> {...}) my_testscore = current_user.test_score my_ts = Testscore.new(:score => my_testscore) test_scores.push(ts) sorted_ts = test_scores.sort {|x,y| x.score <=> y.score } index_one = sorted_ts.index(my_ts) # why doesn''t this work? index...

...em is this: I have a sample of classes (class being the nesting factor). Within each class I have a sample of students. I have separate random effects models at each level. That is, at the class level, I have: random=~class_size+number_teachers+class_length and at the student level I have: test_score~treatment+experience+age. What I want o assess is the contribution of class level variables simultaneously with individual level variables on test scores. Now, my problem is specifying them both as a random effect. I tried to use: random=list(class=~class_size+number_teachers+class_length, =...