A lot has been reported about Ben Affleck and Jennifer Garner's separation, although the couple are still legally married. But when it comes to co-parenting their three children Violet, 10, Seraphina, 7, and Samuel, 4, the couple are leaving no room for complaints.

In his latest interview with E Online, the Batman actor not only opened up about the fun of helping his children with their school homework, he also praised his estranged wife for being "very good" at maths.

"I was doing math homework last night," he told the website before gushing about the 44-year-old actress's mathematical ability. "When I'm there, you're stuck with your parents helping you with your homework. Jen [Garner]'s very good at math [too]. So far, my eldest kid is in fifth grade and they haven't passed me yet. But I feel like in seventh or eighth grade I'm going to start worrying that they're going to lose me."

Garner had previously said Hollywood couples are not immune to chaotic start-of-school routines. "Everything shifts. It's crazy town. I always feel like September is bananas, doing initial meetings, meetings for room mom, field trips. It's crazy, but good," she told People earlier this week.

The couple, who got married in 2005 after meeting on the sets of Daredevil, were separated in June 2015 but are yet to get divorced legally. However, they are apparently seeing to it that their differences don't come in the way of bringing up their three children.

Keeping up with their "modern family" tradition both Affleck and Garner spend summer vacations with their children.

Previously, Garner had shared her thoughts about the ideal way of parenting. "I don't think empathy is something you can drill in someone's head. You have to have faith that while your kids can seem to be selfish and concerned only about the word 'mine' sometimes, overall, they are watching you really carefully. If you care about other people, they will, too," she told NBC.