Lesbian girls are missing out on the safe sex discussion and that’s hurting them.

When Hannah Harp took her 6th-grade sex education course in upstate New York, she learned about sex at its most traditional form—it was for reproduction, her teacher told her, and was supposed to involve a penis.

“Part of the problem for me wasn’t what’s left out but what was emphasized,” Harp said of her sex education experience, which was focused entirely on heterosexual relationships.