勉強に

… be educational

→ 勉強
phrase Common #7,231
… be educational Often appears in 勉強になる, meaning that something is educational or teaches you something. In 勉強に来る, it means “to come to study.”
JA: この経験は勉強になりました。
EN: This experience taught me a lot.

屋外の音が気になって勉強に集中できない。

I can't concentrate on studying because the noise outside is distracting me.

この本は君の勉強に役立つだろう。

This book will probably help you with your studies.

孤児たちと、勉強に真剣に取り組む何人かの友達と一緒だ。

I'm with the orphans and a few friends who are serious about their studies.

私は勉強に飽きている。

I’m tired of studying.

時間は仕事と余暇と勉強に配分されている。

Time is divided among work, leisure, and study.

ジョージは勉強に真剣でない。

George isn't serious about his studies.

秋が勉強に最もよい季節なのは言うまでもない。

It goes without saying that autumn is the best season for studying.

トムは勉強にまじめでない。

Tom isn't serious about his studies.

だけどそれと君の勉強に何の関係が?

But what does that have to do with your studies?

— パラサイト 半地下の家族 (2019)

私は勉強に疲れた。

I'm tired from studying.

勉強に努力は欠かせない。

Effort is essential for studying.