Views are being sought over the use of standardised assessments for primary pupils.
An independent review, announced by the Scottish Government in October last year, has now opened for opinions to be submitted, before they are considered on March 1.
A report is then expected to be submitted to Education Secretary and Deputy First Minister John Swinney by the end of May.
The review will focus specifically on the experiences of P1 pupils who undertake the assessments.
Online assessments were introduced in 2017 and are carried out through a multiple choice computer exercise, although critics have claimed the tests are not appropriate for young children.
P4 and P7 pupils, as well as teenagers in S3, also undertake the assessments.
David Reedy was appointed last month to lead the review, supported by a small team including Dr Eve Bearne and two members of Her Majesty’s Inspectorate of Education.
The review process will allow the views of interested parties including teachers, councils, professional associations and parent groups to be considered.
A programme of school visits and engagement with practitioners and other stakeholders will also form part of the review.
Mr Reedy said: “I encourage anyone with an interest to get in touch with the review, particularly those with experience of the assessments during the 2018-19 academic session.”
Deputy First Minister John Swinney said: “It is crucial that we have the appropriate approach to assessment in our schools and that is why I commissioned this independent review into the use of P1 assessments.
“The review will consider the evidence gathered and be led by what is best for pupils. I look forward to receiving the review’s conclusions later this year.”