Teacher education aims at providing teacher education program through initial teacher training for teacher trainees, and in-service training for practicing teachers in order to produce knowledgeable and committed teachers for effective teaching and learning. To realize this mission, teacher education programs have been instituted for the training of teachers. These programs differ from one country to another. Even within the same country, there may be different programs training teachers for the same certificate. These alternative programs are a created, specially, where there are shortages of teachers, and attempts are being made to train large numbers of teachers at a time. These alternative programs ease the teacher certification requirement, allowing those who under normal circumstances would not become teachers. This introduces serious challenges. Because large numbers of teachers are needed within a short period, their training is somewhat fast-tracked resulting in what is usually referred to as half-baked teachers - teachers of lower quality. Applicants who did not gain admission into the program of their choice come into teaching only because they have nowhere else to go. Such applicants tend not to be dedicated to the teaching service in the end. Fast-tracking initial teacher preparation actually harm the mission for which the initial teacher training institutions were created. This is because the teacher produced through such training are usually not of high quality.
Teacher preparation has a direct impact on students' achievement. The most important in-school factors upon which student's success hinges, is a teacher who has been well prepared. A well-prepared teacher is one who has gone through a strong teacher preparation program. It is therefore necessary for educators to work to create needed improvements in teacher preparation. To strengthen teacher preparation, teacher preparation programs must provide strong preparation during the initial teacher training period and give support to fresh teachers until they are inducted. Pre-service teacher education should emphasize the acquisition of effective teaching strategies. This can be done in methodology classes and corresponding field experiences. Students who have quality teachers make achievement gains, while those with ineffective teachers show declines, therefore having high quality teachers in classrooms has a positive impact on students' achievements.
Pedagogical content knowledge, subject matter content knowledge and experience determines the quality of a teacher. Teachers make subject-matter accessible to students by using Pedagogical content knowledge. Pedagogical content knowledge has two broad areas of knowledge: teachers' knowledge of students' subject-matter pre-conceptions and teachers' knowledge of teaching strategies. What Pedagogical content knowledge does is that, it links subject-matter content knowledge and the practice of teaching, making sure that discussions on content are appropriate and that, discussions focus on the content and help students to retain the content. The teacher's job is to facilitate the learning of subject-matter by students. The degree to which the teacher can assist students to learn depends on the subject-matter content knowledge the teacher possesses. Teachers who possess inaccurate information or comprehend the subject-matter in narrow ways, harm students by passing on the same false or shallow subject-matter knowledge to their students. The last of the three determinants of teacher quality is experience. Teachers who have served more years gain additional and more specific training by attending seminars, conferences and workshops and in-service training and so tend to understand their job better. They also might have met and solved many challenging situations in their classroom and therefore know exactly what to do in any situation.
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