Looking for a way to help your child's school teacher? Check out the article '13 Ways to Help Your Child's Teacher' for a suggestions on how to help out in the classroom without breaking your budget or investing too much time. Cleaver lists simple suggestions such as sharpening pencils, being a book-buddy, and helping out with general organization throughout the year.
Similarly, I suggest reading the article 'Why Do You Volunteer?' to check your motives on volunteering in your Child's classroom.