6200 Assessment
Abstract The abstract covers the right ground, but it is both too long and too hard to read.  Try to make it more focused and improve the writing.
Research Question The overall research agenda seems reasonably clear, although the descriptions of the research questions are sometimes inconsistent and suffer from unclear writing.  Briefly put, the goal appears to be assessing how the educational achievements of immigrants who arrive in the U.S. as children compare to the education achieved by 2nd generation children of immigrants. 
Literature Review  Some parts of this have been copied directly from published work.  For example, the last two paragraphs of the literature review were copied directly from the article "Educational attainment: analysis by immigrant generation" by Barry R.Chiswick and Noyna DebBurman.  This constitutes plagiarism.  As this is a preliminary draft, we will let this go, but we do not want to see any signs of this in the future.
Data The CPS data seem plausible for the study.  However, the draft proposal does not explain why that data is better suited than alternatives, such as the ACS.  Nor does this draft explain why it would use only the 2015 data.  A proposal should indicate not only that the selected data will work, but that it is a good choice compared to others.
Causal Interpretations Although the draft proposal offers a couple "hypotheses", these appear largely to be empirical generalizations or speculation.  Are there good arguments about what circumstances influence the educational achievement of immigrants, particularly ones that distinguish immigrants whose schooling begins in their original countries and finishes in the U.S. (1.5 generation) compared to those who get all their education in the U.S. (2nd generation?  Do these arguments take into account the education of the parents?  Or the affluence of the parents?  As it now stands, it is hard to see what motivates the research project (although this may in part be the result of the writing issues).

 As now written, the research goal appears to neglect the variation in immigration timing of the parents of 2nd generation (their parents could be 1st generation or 1.5 generation) or, to put it differently, where the first generation parents went to school.  If we need to distinguish a 1.5 generation, should we also consider distinguishing a 2.5 generation.

The patterns of education change over time, both in the U.S. and the source countries for immigrants.  Although the research design suggests it will look at the age of entry for 1.5 generation subjects, it seems to neglect other possible timing issues.

Both the source and meaning of the hypotheses are unclear.  For example, the second hypothesis appears to suggest that second generation will achieve higher schooling than the third generation ("those with native born parents").  Why?
Research Value The potential contribution of this proposed project, its value, is not clearly examined in this draft.  Try to provide a brief, focused statement showing how this research will provide results that do not already exist in the relevant literature and will enhance that literature.
Timetable No timetable appears.  Please develop one for the final proposal.
Citations & Biblio The form of the citations and bibliography are fine.  The absence of cited sources from the bibliography is not.
Quality of writing This paper is difficult to read and understand because of the many syntactic and grammatical errors.  This should not be true of the final draft.  Please seek writing assistance.
   
Priorities for Revising for Final Draft This proposal still needs quite a bit of work.  The writing needs improvement throughout.  The literature must be rewritten from scratch.  The causal arguments need development.  The research plan needs to be better specified.
Miscellaneous Notes