The worst. In middle school and high school I was decently-liked.
In grade school? I was frequently singled out and put on mind-altering drugs by my first grade teacher. My parents tried to resist, but the school supported the teacher and said they'd expel me and accuse them of abuse if they refused to put me on the meds. Those meds would also ruin my metabolism, causing me to rapidly gain weight. I was able to lose the weight as an adult, but I was a husky boy for the rest of my childhood. I was ruthlessly bullied by girls, who learned that they could get away with anything (all bitterly divorced female admin staff) as long as they blamed it on a boy. I got good grades and had friends, but got a reputation as a troublemaker because girls would blame me for shit, or bug me until I yelled at them. I never actually instigated anything.
In second grade I had a male teacher who tried to stick up for me, but the principal would pull rank and punish me anyway. In third grade, I finally had a male teacher who wouldn't put up with the girls' bullshit, and just flat out wouldn't report incidents that they tried to blame me for. He'd just deal with it himself, and discipline who was actually at fault.
But yeah, grade school sucked. Especially first grade. I can't even remember a time I didn't hate school, despite performing well throughout.