In July 2010, the Massachusetts Board of Elementary and Secondary Education (BESE) voted to adopt Common Core's standards in English language arts (ELA) and mathematics in place of the state's own standards in these two subjects. The vote was based largely on recommendations by Commissioner of Education Mitchell Chester and then Secretary of Education Paul Reville, and on the conclusions in three studies comparing the state's standards with Common Core's, all financed directly or indirectly by the Bill & Melinda Gates Foundation, and all issued by organizations that are among the primary boosters of Common Core (Achieve, Inc., Thomas B. Fordham Institute, and Massachusetts Business Alliance for Education). Nevertheless, annual state testing for school and district accountability continued as part of the Massachusetts Comprehensive Assessment System (MCAS) mandated by the 1993 Massachusetts Education Reform Act (MERA). To accommodate the adoption of Common Core's standards, tests were based on both the old standards and an annually increasing number of Common Core's standards until 2015, when all of the pre-Common Core standards in ELA and mathematics were archived, and the MCAS tests were presumably only Common Core-based. After the vote to adopt Common Core's standards in 2010, the state joined the testing consortium called Partnership for Assessment of Readiness for College and Careers (PARCC), funded by the United States Department of Education (USED) to develop common tests for its member states (about 25 initially), but with the costs for administering the tests to be borne by the states and local school districts. Since 2011, PARCC has been developing tests that BESE is expected to vote to adopt in the late fall of 2015 as the state's official Common Core-based tests in place of Common Corebased MCAS tests. (Indeed, the commissioner of education and his staff at the Department of Elementary and Secondary Education (DESE) have been implementing a transition to PARCC tests for several years.) BESE's official vote will be guided, again, by the recommendations of the same commissioner of education (who now also chairs PARCC's Governing Board), the current Secretary of Education James Peyser, and the conclusions reached in "external" studies comparing PARCC and MCAS tests as well as in about 20 studies directly authorized by PARCC. Two of the external studies are listed in the state's 2015 application to the USED for a waiver from No Child Left Behind Act requirements and are by organizations that had originally recommended adoption of Common Core. One, issued by the Massachusetts Business Alliance for Education in February 2015, claims that PARCC tests predict college readiness better than MCAS tests did. A second, to be completed by the Fordham Institute and a partner, is to be issued in time for BESE's vote. A third, issued in mid-October 2015 by Mathematica Policy Research (and requested by the state's Executive Office of Education) claims both tests are equally predictive of college readiness, although its report has major shortcomings. This White Paper will be a fourth external report on the question BESE's vote will address; it is motivated by our interest in providing an analysis of how MCAS and PARCC assess reading and writing. Much less national attention has been paid to Common Core-based assessments of reading and writing than of mathematics, yet reading and writing skills are just as important to readiness for college and career as is mathematics. This White Paper's central recommendation is that Massachusetts use a testing system for K-12 that is much less costly, more rigorous academically, and much more informative about individual student performance, and with much less instructional time spent on test preparation and administration, than the current PARCC tests. Both the PARCC tests and the current MCAS tests in grade 10 are weak, albeit for different reasons, and neither indicates eligibility for a high school diploma, college readiness, or career readiness. In essence, the authors recommend that BESE reject the PARCC assessment system and vote for the MCAS system but on the condition that the responsibility for developing and administering K-12 standards and tests be assigned to an organization in Massachusetts independent of DESE and the state's education schools. This organization must focus squarely on providing the best possible content standards from disciplinary experts in the arts, sciences, and engineering throughout the state and be capable of providing oversight of high school standards and tests. If carried out, these recommendations would ensure the legacy and future promise of MERA. The following are appended: (1) Critique of Criteria for Evaluating Common Core-Aligned Assessments, (2) Links to Public Hearings and Other Sources of Public Comment on MCAS or PARCC, and (3) A Randomly-Chosen Test Item Used on the 2014 Grade 10 MCAS Math Test. Also provided are additional recommendations, an about the authors section, and endnotes.