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Possible Duplicate:
Best practice when analysing pre-post treatment-control designs

I'm doing an action research study with 2 of my classes: 1 is the 'treatment' class and the other is the 'control'.

Both classes undertook a pre-test prior to the 'treatment'.

Then, after the 'treatment' stage (the control class didn't receive any 'treatment'), both classes did a post-test.

What statistics should I use? Paired t-tests? ANOVA with repeated measure? Help!

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marked as duplicate by chl Jan 26 '13 at 11:56

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Covariance analysis.
The post-test is your dependent variable.
Class 1 versus class 0 is the independent variable. The pretest is the covariate.

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