noun
intensive course; crash course
A short, concentrated educational program designed to teach a subject quickly.
夏休みに速成科でプログラミングを学んだ。
I learned programming in an intensive course during summer vacation.
この速成科は2週間で基本を身につけられる。
This crash course lets you acquire the basics in two weeks.
Compound of 速成 (quick completion) and 科 (course, department).