The Jharkhand Police SI selection process conducted by JSSC involves a Preliminary Written Test, Physical Standard Test (PST), Physical Efficiency Test (PET), and a Main Written Test. Candidates clearing the preliminary test are called for physical evaluation. Those meeting physical standards appear for the comprehensive main written test. Final selection is based on main written test performance and physical test scores. The entire process is designed to select candidates who are both academically capable and physically fit for Sub Inspector duties in Jharkhand.

For Jharkhand Police SI, male candidates need a minimum height of 165 cm and a chest measurement of 81 cm (expandable to 86 cm). Female candidates need a minimum height of 155 cm. Jharkhand provides height and physical relaxations for Scheduled Tribe candidates, particularly those from tribal-dominated districts, recognizing the different physical development patterns of tribal communities. The PET includes running, jumping, and other fitness events. These standards ensure that selected SIs are physically capable of effective policing in Jharkhand's diverse terrain.

Jharkhand Police Sub Inspectors receive a basic salary ranging from Rs. 35,000 to Rs. 45,000 per month under the Jharkhand government pay scale. With DA, HRA, and other allowances, the total monthly in-hand salary is approximately Rs. 45,000 to Rs. 55,000. SIs posted in Naxal-affected or LWE (Left Wing Extremism) areas receive additional hardship allowances, significantly increasing their effective monthly income. Pension, gratuity, and health benefits are also provided to all police service members.

For JSSC SI, study Jharkhand history (tribal uprising, Santhal Pargana, formation of Jharkhand in 2000), Jharkhand geography (Chota Nagpur Plateau, minerals like coal, iron ore, mica), tribal culture (Santhali, Ho, Munda tribes), government schemes (Mukhyamantri Krishi Ashirwad Yojana, Phulo Jhano Ashirwad), and Jharkhand economy. The naxal situation and LWE management in Jharkhand is a unique contextual topic. Important personalities like Birsa Munda, Sibu Soren, and other Jharkhand figures are frequently asked.

Jharkhand Police SI provides significant relaxations for Scheduled Tribe candidates, reflecting the state's large tribal population. ST candidates receive age relaxations of 5 years (upper age limit extended to 31 years). Physical standards may have relaxations of 5 cm in height and 5 cm in chest measurement for candidates from tribal communities. Additionally, reservation benefits ensure a significant proportion of SI posts are reserved for ST candidates. SC candidates also receive age relaxations of 5 years. These measures ensure representation of the state's diverse population in the police force.