The best everyday hoodie is the one a child can put on without help and keep comfortable through a full day. Start with the intended use: a soft fleece is useful for cool mornings and indoor air-conditioning, while a heavier layer may be too warm once the day gets active.
Check the size chart against a hoodie that already fits rather than relying only on age. Pay attention to sleeve length, room through the shoulders, and whether the waistband rides up when arms are raised. If it will be worn over uniforms or thicker shirts, a little extra room is helpful without going so oversized that the cuffs cover the hands.
For a piece that will enter the weekly rotation, consider washability and color coordination. A shade that works with several bottoms earns more wear, and a familiar pullover shape avoids fussy zippers or loose hardware. Comfort, easy care, and repeat use matter more than a trend that lasts one season.