Are academic examinations in Britain institutionally racist and a legacy of colonialism?

The claim has recently been made that the exam system in Britain should be decolonised, because it is unfair to ethnic minorities to expect them to turn up on time to take exams and then use correct English grammar and syntax during them. ./education-skills-and-training/a-levels-apprenticeships-further-education/students-aged-16-to-18-achieving-3-a-grades-or-better-at-a-level/latest/ Office for Students (2021) Students need support to succeed in and beyond higher education, 11/3/2021.