NewPages maintains two guides where young readers and writers can find print and online literary magazines to read, places to publish their own works, and legitimate contests: Publications for Young Writers and Writing Contests for Young Writers. Both of these are ad-free resources regularly updated with carefully vetted content.
Girls Right the World is one of those listed, their mission is to provide an “an international literary journal advocating for young, female-identified writers and artists. This journal values and promotes diversity of culture and expression.” The publication is edited by students at Miss Hall’s School in Massachusetts. Currently, Girls Right the World has extended their deadline for submissions.
Female-identified writers and artists, ages 14–21, are invited to submit poetry, prose, and visual art of any style or theme for consideration for the sixth annual issue by January 31, 2022. For full submission information, visit their site here.