Kumon, Aloha, Russian math or Personal Tutor
These are the after school options, the parents in USA have for helping their kids excel in education.
Kumon: http://www.kumon.com/ or call 800-ABC-MATH
Russian Math: http://russianschool.com/ or call (617) 332-8243
Aloha (Abacus): http://www.aloha-usa.com/ locations.aspx or call 877 ALOHA 03
Personal tutor: You will have to ask around for the available tutor or personal trainer in your area. Try asking someone in your social network.
What is Aloha?