MoggyP - a 'brief Google' didn't throw up irregularities in non-academy school accounts. That said, no financial irregularities should be ignored, but the way academy trusts are set up makes it easy for related party transactions to take place or for complicated structures to hide wrong doing (try Durand, Barnfield Federation, Perry Beeches). Five of the ten academy trusts which have the most free schools are causing concern (Perry Beeches, Cuckoo Hall Academy Trust, Chapel Street Community Trust have all been sent Financial Notices to Improve; CfBT has received an Ofsted letter of concern; BEPT is linked via personnel and other companies to an investor named in the Panama Papers).
Re testing: the OECD warned in 2011 there was an excessive emphasis on exam results in England which could have negative consequences: teaching to the text, gaming and neglect of other important skills.
Tests at 11 have no educational value. That should actually be of more concern than stress. Children are wasting time tearing literature into its component parts, for example, when they should be enjoying it. No amount of spotting 'fronted adverbials' and 'past progressive' will turn children into competent readers and effective writers.
Our children are among the most-tested in the world. Few countries have exams at 16 - if they do they are few in number, cover just core subjects and are used to decide post-16 progression not to judge schools.