"I can't say what their intention was, but that's not going to be acceptable," Davis told the Texas Tribune.
Part of the proposed draft standards obtained by the Texas Tribune says students should "compare journeys to America, including voluntary Irish immigration and involuntary relocation of African people during colonial times".
Texas' public education system has become heavily politicised in recent years, with lawmakers passing legislation to dictate how race and slavery should be taught in schools and conservative groups pouring large amounts of money into school board races.
Texas drew attention for a similar situation in 2015, when a student noticed wording in a textbook that referred to slaves who were brought to America as "workers". The book's publisher apologised and promised to increase the number of textbook reviewers it uses.