Jóvenes estudiantes multiculturales eligiendo el modelo molecular para la lección de ciencias - Foto e imagen de stock

Young multicultural students picking molecular model for chemistry lesson

Education, science and children concept - teacher and students studying chemistry at school laboratory and writing to workbooks

Education, science and technology concept - kids with tablet pc computer studying chemistry at school laboratory

Cruel schoolkids pointing with fingers and laughing near bullied schoolgirl covering face while crying in classroom

Back view of bullied schoolgirl sitting near schoolkid with smartphone and cruel classmates, cyberbullying concept

Selective focus of schoolkid with smartphone and cruel classmates laughing near bullied kid, cyberbullying concept

Dissatisfied female teacher looking at male student taking crib during exam in classroom

Dissatisfied female teacher with arms crossed looking at male student cheating during exam in classroom

Selective focus of schoolkid bullying classmate near schoolgirls

Selective focus of schoolboy touching backpack of bullied schoolgirl near cruel classmates, cyberbullying concept

Selective focus of schoolkids gossiping near classmate isolated on black, bullying concept

Selective focus of dissatisfied female teacher looking at male student taking crib during exam in classroom