Hi, please do not feel guilty if you think your child needs tutoring. I can state for a fact that most of the children getting into these schools have used external support. The few that haven't, are truly geniuses.
We were in the same position around comprehensions and writing. We picked up a tutor from Owl Tutors for English for 3 months, specifically geared towards:
- Helping him with comprehension strategies
- Building his vocabulary and helping him write in flowery language, using similies, metaphors, adjectives, etc etc.
After 3 months (of also watching) I felt capable enough to work with DS. For writing, I used to give him a paragraph to write on anything (random topics or pictures shown) 3 times a week. Then used to work with him on improving the paragraph.
Towards September, I got him a few weeks of classes with First Exams for writing (you can look them up on google). That helped him polish for KCS (he got an interview invite but no further).
For comprehension, I sat with my son and made him read the comprehension passages loudly, with expression etc and asked him questions every few sentences (got this technique from the Owl Tutor fellow). Working like that for a few months helped a lot.
Also what really made a difference was I enrolled my son for almost all mock tests happening all over the place all the way till December. He was very well prepped in managing his time as a result. These mock tests are expensive but well worth it.
Hope that helps. My son gave the SPJS interview yday and is going for WUS interviews tomorrow. While I cannot vouch for how his interviews go (he was rejected at Kings), I can certainly say that the above really helped me (and him) crack the written assessments of these tough schools.