The fact that children who speak a different language at home than their taught language at school often leads them to fall behind educationally is called subtractive bilingualism.
Subtractive bilingualism is a phenomenon that has been noticed in children who have to speak different languages at home and at school. Subtractive bilingualism shows that when children speak a different language at home than the language spoken by their teachers when they teach them in school, they tend to fall behind their peers academically.
The reason for this is simply because the students are less capable of understanding what they are being taught because they do not understand the language they are being taught in, very much. As a result, they find it difficult to grasp concepts that they need to grasp to be able to pass their school work and evaluations.
Find out more on Subtractive bilingualism at https://brainly.com/question/24183286
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