From what I've heard, Eye Level does put quite a bit of emphasis on understanding concepts rather than just drilling answers, which is a bit different from something like Kumon, so for critical thinking specifically, parents generally feel Eye Level edges ahead there. My neighbour sent her daughter there and mentioned the instructors were genuinely warm and took time to explain reasoning, not just tick boxes. That said, results do seem to vary by centre and by child, so it's worth visiting the branch near you to get a feel for the teachers before committing. Overall, if your P3 child needs to build stronger problem-solving foundations rather than just speed, Eye Level seems like a reasonable fit, just go in with realistic expectations that progress takes a few months to show.