image by Željko Heimer, 19 June 2001 (source:[kan56])
The Police flag is prescribed in Articles 13 and 14 of Law No. 360 of 13 August 1943 (Law on the national flag), published on 21 August 1943 in the Official Gazette, No. 5,960.
The flag of the National Police shall match the following description. A quadrilateral of dimensions equal to those of the national flag, divided into three horizontal stripes each covering one third of the flag. The upper stripe is vertically divided into two unequal parts, the one at hoist, covering one third of the stripe and being charged with the national flag, and the other, ultramarine blue with an horizontal row of five stars. The middle stripe is white. The lower stripe is emerald green.
The flag of the National Police shall be hoisted daily, together with the national flag, on all headquarters of the institution; all the units having a flag shall hoist it, too, together with the flag of the Republic.
In his work on police flags [lup93], Lupant gives two slightly different versions of that flag, on pp. 57-58, fig. 86 police flag (without arms citing Kannik [kan58]) and fig. 87 police flag without arms and without stars (citing private communication). Željko Heimer, 19 June 2001
No coat of arms and stars
image by Željko Heimer, 19 June 2001 (source: [lup93], from [kan58])
No coat of arms and no stars
image by Zachary Harden, 14 November 2018
The flag in current use has no stars and no coat of arms, as seen in a photograph online. Ivan Sache, 8 December 2015
image downloaded by Randy Young, 14 March 2016
The Escuela de Grado, Academia para Cadetes is the cadet academy of the Dominican Republic's National Police. The school was established in the city of San Cristobal by General Order No. 014-2004. Known as the "2 March" Academy in honor of the founding of the National Police on 2 March 1880, the school's motto is "Dignidad, Disciplina, Conocimiento" (Dignity, Discipline, Knowledge).
Source: Wikipedia article (in Spanish)
The Academy's flag can be seen in photographs online, particularly here and the video here. The flag is a horizontal tricolor of red, white, and blue equal bars, with the school's coat of arms centered on the white bar. The coat of arms shows an open book with rays on sunlight shooting upward, and the date "2 DE MARZO" arched in black letters in the rays. The book is flanked by a green wreath. Below the book is a blank blue banner separating the book from the dark blue initials "R.D." for "República Dominicana." Arching downward to the left from the rays are three bands of blue, white, and green, representing the design of the National Police flag, while similar bands of red, white, and blue arch toward to the right, mimicking the design of the Academy's flag. The name of the school is in white letters on a blue banner above the seal, while the words "POLICIA NACIONAL" are in black below the seal with the school's motto on a blue banner below it all to mirror the name above. Randy Young, 14 March 2016