Best:
Blue Coat
St Edward's
King David
Liverpool College
Belvedere
Good/decent
St Margaret's
SFX
Bellerive
St Hilda's
St Julie's
Archbishop Blanch
On the rough side:
Calderstones
SFX* (good enough school but somewhat rough)
Bad:
Broadgreeen
Childwall
De La Salle
Archbishop Beck
West Derby
Avoid like the plague:
Shorefields/University Academy Liverpool
Christian Fellowship School (not rough but absolutely terrible on virtually every other front - in danger of getting closed down even)
Ignore the above reports - Ofsted can be deceiving. Shorefields was once rated good by Ofsted. SHOREFIELDS.
Pick a school in your area, go to their website, and look for the OFSTED report.
This will tell you if the school is any good.
I would also add in the best category Merchnt Taylor's Boys School in Crosby.
Look on OFSTED site for reports on any that may be of interest....
Ofsted publishes reports on all of them. Have a look