Some tips at the start of the school year:
1. Don't Cram - Space your studying and learning over time.
2. Work with New Knowledge To Remember
If you want to avoid losing what you've learned, then find some way to manipulate what you've newly acquired. Repetition may help some, but building associations between pieces of information, manipulate lists of information, and drawing correlations with information you already know will help you hold onto what you've learned.
3.Brush Up On Study Skills
One good site: How-to-Study.com site
Cramming vs. Spaced Studying
Efficiency of Shuffled Math Practice
Learning for Long Term Memory
Eide Neurolearning Blog: Procrastination
Eide Neurolearning Blog: Aims of Education
fMRI Long-Term Remembering pdf
Ideas for Active Learning from UNC