This is the 7503rd most frequent Japanese word.
入試
Entrance examination.
In this sentence, '入試' refers to the university entrance examination, indicating its scheduled occurrence.
大学の入試は毎年春に行われます。
The university entrance exam is held every spring.
Here, '入試' is used to specify the purpose for her intense studying, showing preparation for an exam.
彼女は入試に備えるために猛勉強しています。
She is studying hard to prepare for the entrance exam.
This usage of '入試' points out the specific day designated for an entrance exam, expressing hope for favorable weather conditions on that day.