Here is a suggestion!

Teachers we are highly communicative people. For this reason many times we might say our opinion regardless what the context is. And believe me…when we are in the work environment, negative opinions should be put aside and we really need to  be professional in the workplace.  If a negative opinion about anything is said and it is related to work, it might affect everybody else in the work environment. We need to work for the best.
Honestly speaking, a better choice is to keep working and just share the positive experiences, except for those cases when a problem arises and you need to get it solved, and that for sure is a professional topic.
Ways of relating each other make a difference in our work environment. Inter-relationships must engage team work, avoid personal topics which might distract us from our objectives aims. Basically because teenagers need teachers being firm and assertive.