Actress Reese Witherspoon says her date night with husband Jim Toth is all about their children's homework.

"Our date nights are mainly helping our kids with homework," usmagazine.com quoted Witherspoon as saying.

"And then, going to sleep," added the "Legally Blonde" star.

Witherspoon has three children - Ava, 15, and Deacon, 10, from her ex-husband and actor Ryan Phillippe, and two-year-old Tennessee with Toth.