Like all measures on easyCBM®, alternate forms of each reading test were designed to be of equivalent difficulty, so teachers can progress monitor students from the initial screening assessments, through their progress monitoring tests every month throughout the year, comparing progress to subsequent screening assessments (winter and spring).
Our reading measures are grouped by skill sets. Each skill set progresses in difficulty with Phoneme Segmenting, Letter Names, and Letter Sounds being the easiest, Word Reading Fluency, Passage Reading Fluency being the more difficult, and Multiple Choice Reading Comprehension being the hardest to complete. So if you have a student who is performing below their grade level then you can give them measures that are a lower grade and if they are unable to do multiple choice reading comprehension by all means don’t administer it. The idea is to find what grade and what skill sets the student can do, build on them and then move up to higher grade and skill set until the student (if possible) is able to be at their grade level. If their IEP states they need any accommodations for any of the testing than by all means employ them.
All our measures are designed to be appropriate for students in the middle of the year at their particular grade level. Because of this, the measures may seem too difficult for students taking tests at the beginning of the school year. As the year progresses, that will level out for the students and you should see progress in their knowledge and skill base.
Each measure in a given skill set (skill sets are: Letter Names, Phoneme Segmenting, Letter Sounds, Word Reading Fluency, Passage Reading Fluency, Multiple Choice Reading Comprehension, and each of the three math sections) are designed to be of equivalent difficulty, so if a student does poorly on one test, and then you provide targeted instruction to help him/her improve their skills, you can have them take a different form of the same test type and use that score to see if there has been improvement.
The first number of a measure indicates the grade. The second number is an arbitrary number and indicates nothing more than a way to distinguish one measure from another. The numbering of the assessments does not represent the order in which to administer them or their degree of difficulty, it’s just a way to keep track of the tests. So if a student took a Passage Reading Fluencey Measure 3_1, it would be a 3rd grade measure and it was the first measure in the series of assessments.