Their initial entry into our program gives us assessment scores which determines the Grade Level Equivalent. Use the identified GLE as a rough beginning point.
It’s possible your tutee’s score is lower than expected because of test conditions, anxiety, unfamiliarity with the process, etc.
Find materials at indicated grade level, plus materials one level lower and one level higher. See how your tutee responds to the materials and adjust.
The Fry Sight Words list could be a good beginning point to determine automaticity of word recognition.
Ask them to read out loud from a text to gauge fluency, then ask them to answer questions about the reading to gauge comprehension (or read to them and then ask comprehension questions). Are they able to decode and understand the text at the same time? Do they understand better when they’re listening but not actively decoding?