"Tous les jours, je me sentais mal en allant au lycée."

Translation: Every day, I used to feel bad while going to high school.

[fishedout]

Hmm...allant...I looked it up, it's the present participle of aller. I don't recall ever learning about the present participle of any verb before.

[envacance]

Presumably, the point of the lesson is to teach the "while [do]ing" construct.

For example:
Je suis tombé en mangeant de la soupe. I fell down while eating soup.

[Amanda39912]

Me too

[tARj1]

That phrase gives confusing context. Does "se sentir mal" mean physically ill or psychologically or both?

[Ripcurlgirl]

It can be literal or figurative. Je me sentais mal could mean I used to feel bad, sick, anxious, worried or simply "I have a bad feeling" (à la Star Wars ☺).

Whatever the context behind the emotion, it is safe to translate mal to bad.

[jeanv]

I wrote "Every day I used to feel bad on my way to high school" What is wrong with that? It is much better English.

[Ripcurlgirl]

en allant = "while going", not "on my way"