I was allowed to be in the room when my dd was first tested at four and a half. She was very introverted and even with me in the room, she was hesitant to speak. She ended up not completing the test as she had what we recognize now as a blood sugar issue- she had a donut and cocoa for breakfast, what I considered a "treat" LOL, ended up making her crash 45 minutes into the testing process.

She was tested two years later and did fine without me in the room.

Testing a four year old is tough, even for a veteran administrator. Good luck!