Looking for a light romance where the two main characters (male and female) are in high school and are looking after a child. Don't want massive drama or anything heavy.

Pretty much like: Papa to Mama Hajimemashita

I'm sure this isn't the only one. Thanks.

aishiteruze baby
Check out the Childcare category...
[url]http://www.mangaupdates.com/series.html?category=Childcare&orderby=rating[/url]

Hm, not exactly a match among them, but you can take a look at ...

• Love So Life - The main character is a high school student and works at a daycare, til she starts to take care of two-year-old twins ...

• Bye-Bye, Little. - Ch. 1 ("Bye-Bye, Little."); The lead is a high-school student and has to take care of her younger brother, since her father passed away and her mother has to work, then a classmate starts to support her.

• Junjou Drop - And high-school students taking care of kids... ^^"

"It's like love is a bonus in your life. Even without it, I'm just fine. I don't feel like pointlessly searching for it. You don't have to make yourself unhappy." (Ookami Shoujo to Kuro Ouji)

"Why does it rain?" - "To create drama." (Drops (Andou Yuki))

Beelzebub - not serious at all (serialized in Jump)
Girls of the Wild's - more serious

"People don't change, they just give in."Kubera is the best.同人音楽 (doujin music)

Gakuen babysitters

Not 100% of what you're looking for but Flat (AOGIRI Natsu) is quite an adorable peace of work 🙂

I'm already reading/have read:

Girls of the Wild's
Love So Life
Bye-Bye, Little.

I'll definitely look at Gakuen Babysitters

Just to be thorough, I'm looking for:

Romance
High School
Comedy (ish)

I don't want:

Yaoi or Yuri
Tragedy
Intense Drama
Psychological
etc. etc. - just keep it simple

Thanks for all your suggestions thus far.

Some other not mentioned:

Chibi Devi! - Supernatural (the child isn't human)
Daa! Daa! Daa! - Alien baby
Momo Raba

and Faster than a Kiss, but there only female protagonist high school (the male is a teacher and the child is her little brother)