My son is 5 and he is currently doing a general K workbook, 1st grade reading, writting and math. He blew through the k workbook but is still not reading on his own so we are repeating 1st grade reading however he is excelling in math. He is breezing through his 1st grade math work and I was thinking of starting him in 2nd grade math next year. Has anyone gone this far ahead in one subject before? I feel like he is so young for this but I also feel bad making him repeat 1st grade math if he already knows it. Any thoughts would be great, Thank You.