Those raising concerns about the assessment of what have been branded "exams in disguise" include the principal of George Watson’s College one of the country’s most prestigious private schools.
Ferret Fact Service looks at claims from the party leaders during the STV election debate.
A no deal Brexit would put school testing data at risk and could lead to "unacceptable" shortages of teachers, according to documents released by the Scottish Government.
Ferret Fact Service looks at a claim by the Scottish Greens that more than 500 additional support teachers have been cut since 2010.
Ferret Fact Service looks at Kezia Dugdale's claim that teacher numbers have declined by 4,000 under the SNP government.