the university entrance examinations start in January
the exam season starts in January
「受験する」= take an examination/take high school(またはuniversity)entrance examination
「入学試験」= entrance exam
「[1月](https://eikaiwa.dmm.com/uknow/questions/58456/)から受験が[始まる](https://eikaiwa.dmm.com/uknow/questions/52418/)」= My (the) examinations start in January / the university entrance examinations start in January / the (high school/junior high school) entrance examinations start in January / the exam season starts in January