Implicit biases affect everyone in society, including within the K-12 education system. This study investigated what memories of implicit gender bias preservice teachers (PSTs) recalled from their K-12 education. These memories may be connected to the PSTs' embedded implicit biases and indicate the long-term impact of teachers' biases on students. A total of 141 undergraduate PSTs from two universities were surveyed regarding gender expectations and recognition of LGBTQ+ people. Results indicated an inconsistency between espoused beliefs and practices within the classrooms. Because schools often reflect society's norms and perpetuate them through implicit bias, understanding what biases are currently accepted and reinforced in schools allows teacher education programs to unpack these specific biases with their preservice teachers to promote greater equality and ultimately reduce sexism in our society.