다니다 has several meanings 1. go, (formal) frequent 나는 매일 병원에 다닌다 I go to the hospital every day. 어렸을 때는 그곳을 잘 다녔다 When I was young, I used to frequent that place. 여러 곳을 다녀 봤지만 이 식당 음식이 제일 맛있다 I've been to many restaurants, but this place has the best food. 2. run, go 그 마을은 버스조차 안 다닌다 Buses don't even run in that town. 그 섬에는 배가 다니지 않는다 There's no boat that runs[goes] to that island. 기차는 30분마다 다닌다 Trains leave every 30 minutes. The train runs every half hour. 3. pass 이 길은 사람들이 많이 다닌다 Many people pass on this road. 밤에는 혼자 다니지 마라 Don't walk around alone at night. 이 길은 내가 평소에 다니는 길이다 This is the road I usually take. 이 물건들은 내가 전국을 다니며 수집한 것이다 These are the items I collected from traveling around the country. 4. go to, attend, work for 그의 아들은 유치원을 다닌다 His son goes to kindergarten. 어떤 회사에 다니세요? What company are you with? Where do you work? 어느 학교에 다니세요? Where do you go to school? Which school do you go to? 새로 옮긴 회사는 다닐 만해요? How do you like (working for) your new company? 5. go around with[together], (informal) hang around[out] (with) 우리는 항상 같이 다닌다 We are always together. We always go everywhere together. 아직도 그 애들이랑 다니니? Are you still going around with them? Do you still hang out with them?

Ahh... okay! Thank you! :)

I think I've seen 다니다 used as "Attend" for example, "to attend (a) school"

I was on a website and it said 다녀요/다니다 meant "to go to", but I wasn't sure. Thank you. :)

Where did you find what word? That's not a correct Korean word.