First grade teacher here: My students have spelling and math each night for homework-- these together should take about 10 minutes-- I do ask them to read 15-20 minutes each night. They can read to a parent, sibling, aunt, uncle, etc. Also they can partner read-- parent and child sit next to each other with a book. The page that is on your lap is the page you read-- parent on left, they read left page, child on right, child reads right page. My feeling is, that the kids do so much work in my classroom, I don't want to bombard them afterschool!