Complex sentence: Standardized testing has been a part of American education since the 1800s, but the widespread reliance on standardized is largely a 20th-century phenomenon.However, the College Entrance Examination Board did not began standardized testing in connection to higher education until 1900.
Split into simpler sentences: Standardized testing has been a part of American education since the 1800s, but the widespread reliance on standardized is largely a 20th-century phenomenon. For instance the College Entrance Examination Board did not began standardized testing in connection to higher education until 1900.