ツイッター見てると
ほとんどの個人塾は授業をやってるな
https://twitter.com/atsuo_ozaki
https://twitter.com/sigma_seminar
https://twitter.com/selmo_sugebanba
https://twitter.com/syoueizyuku
https://twitter.com/hige1126
https://twitter.com/keishoseminar
https://twitter.com/gen__uine
https://twitter.com/masahirokawai
https://twitter.com/five_schools
https://twitter.com/ttkyyoshida
https://twitter.com/5chan_nel (5ch newer account)