i would wager to say homeschooling is a proper alternative, just not a proper permanent alternative
i can safely say being homeschooled for a year totally helped me out socially and academically in school. i left public school in 3rd grade because i didnt like people. i went as far as to tell my parents i was being bullied so they'd pull me out as fast as they could because i really didnt like public school. being homeschooled was amazing, but you do eventually miss people. once that happened and i was practically pretending i had other classmates at home, my parents suggested going back to public school and i was totally for it. i did get held back (which the school probably suggested, but that was 100% a choice by my parents. my mom felt like she didnt teach me well enough) but i thrived that year. i started making friends, i was getting great grades, and the rest of public school was pretty much a breeze after that (or at least as much of a breeze as public school can be)
not really sure if its relevant, but i saw a lot of people talking about how awful homeschooling is so thought id share how it benefited me