Body parts and simple math like 2 +2 =4 and so one . They have to be able to spell and write there first and last name and every alphabet capital and small
They need to know how to count to at least 10 with no issues but they prefer 20 they have to know abc not only know them but know how to pronounce each letter and can point them out when asked show me which ever letter . They need to know all colors just the basic ones and all basic shapes
My mom is a 1st grade teacher and she said that she can tell the difference in the students if they've used it before. They use it a lot in Kindergarten where I'm at