That's trick! I had no idea.
Use WD 40 liberally on both sides of the stain. Allow the WD-40 to penetrate through the stain. The stain will begin to loosen. Test by touching the stain. Small flecks of the white out should begin to come loose. Rinse thoroughly.
Lay the clothing on a clean white towel. Sponge nail polish remover onto both sides of the stain. Rinse thoroughly. Repeat the application of nail polish remover and continue to rinse until the stain is removed. Rinse the stained area thoroughly.
Finally, to remove any hidden traces of the stain, apply a stain stick, spray, or gel to the stained area and wash normally.
Note-to-Self: Post in laundry room just in case teacher dh has a fight with white out again and looses.