I think it's definitely a stretch to call JP a racist as she has never struck me as one over the years, but JP should not have called into question the safeguarding at the school as she has no proof of that and running down the school seems counterproductive when the Michaela School gets good results:
In its first set of GCSE results in August 2019, half of the pupils who sat exams got Grade 7 or above in at least five subjects and almost a quarter got Grade 7 or better in all their subjects.[31] Overall 18% of entries received grade 9, the highest grade, compared to 4.5% nationwide.[7] In maths, one entry in four achieved grade 9.[9] The school's Progress 8 benchmark score placed it fifth nationally.[32][33] In 2021, the first A-Level cohort, 82% of the school's students were offered places at Russell Group universities.[34]
It'a shame to divide along party lines when the challenge to get a better education for working class children who can't afford a private education is shared by both.
60% of those from independent schools in higher education attend a Russell Group university, compared to just under a quarter of those from comprehensives and sixth form colleges.