いろんなフォントで「school_board」変換
Zen Old Minchoschool_board
Yusei Magicschool_board
M PLUS 1school_board
Shippori Antiqueschool_board
Yuji Maischool_board
Dela Gothic Oneschool_board
DotGothic16school_board
Train Oneschool_board
Hira Minchoschool_board
Potta Oneschool_board
Reggae Oneschool_board
Stickschool_board
Zen Kurenaidoschool_board
Kosugi Maruschool_board
Rampart Oneschool_board
Hachi Maru Popschool_board
New Tegominschool_board
RocknRoll Oneschool_board
Kaisei Decolschool_board
「school_board」をコピペできる装飾文字に変換（旧字体・丸囲みなど）
