Welcome to the Q&A Forum

Hi guys! You must get many questions about external links... This is mine. If I get an external link with good authority ranking in google, but it is not relevant to the site (for example, my site is about marquees, but we could get links from schools, which are our main clients, or any type of client) Does that affect negatively somehow to the rankings? or there is good value on it even is not related? Thanks! Adriana