There are several interesting and wide-ranging articles on this page from the Good Schools Guide. They cover not only the process of choosing a school but also useful information about different types of schools, entry processes and much more.
This Blog (courtesy of Exam Papers Plus) contains a wealth of useful information about entry assessment format and logistics at a large number of senior schools. Use the search function at the top to
There are many useful websites to help with preparation for the 11+ ISEB Pre-Test. A few of these include: Atom Learning. An excellent, adaptive platform used by a large number of prep schools. In
In addition to the information on this website, this article from the Good Schools Guide gives some interesting insights into the interview process. It is well worth a read.