I think I was that quiet kid in class who could be quiet and well behaved enough, not to be taken noticed of by the teachers - that was definately the case in primary school - never ever spoke- had speech&language therapist when very very little, because of shyness, so avoided talking in class etc, never liked doing maths - was in a group where we got help to understand maths, because everyone who knew me was focusing on trying to help me to speak, so everything else was less focused on (wasn't helped i was socially excluded by everyone in my class by girls who were generally petty people), so maths got generally better in high school, but maybe not so good grades because I was mainly in bottom sets because of the social reason as I was more confident in small classes...
despite being an advanced reader from a young age. but hey I was one of the highest scorers in my health and social care AS level - top 0.5% scorers in the country